src/monitor/stc-time.c

   1 /*
   2  * Copyright (c) 2016 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <time.h>
  18 #include <stdbool.h>
  19
  20 #define SEC_IN_DAY 24 * 60 * 60
  21 #define SEC_IN_WEEK 7 * SEC_IN_DAY
  22
  23 time_t stc_time_get_day_start(time_t now)
  24 {
  25         struct tm curr;
  26         struct tm *res;
  27
  28         res = localtime_r(&now, &curr);
  29
  30         curr.tm_sec = 0;
  31         curr.tm_min = 0;
  32         curr.tm_hour = 0;
  33
  34         return mktime(&curr);
  35 }
  36
  37 time_t stc_time_get_week_start(time_t now)
  38 {
  39         struct tm *curr;
  40         int days;
  41
  42         curr = localtime(&now);
  43
  44         curr->tm_sec = 0;
  45         curr->tm_min = 0;
  46         curr->tm_hour = 0;
  47
  48         if (curr->tm_wday > 1)
  49                 days = curr->tm_wday - 1;
  50         else
  51                 days = 1 - curr->tm_wday;
  52
  53         return (mktime(curr) - (days * SEC_IN_DAY));
  54 }
  55
  56 time_t stc_time_get_month_start(time_t now, int month_start_date)
  57 {
  58         struct tm *curr;
  59         bool is_leap_year;
  60
  61         curr = localtime(&now);
  62
  63         curr->tm_sec = 0;
  64         curr->tm_min = 0;
  65         curr->tm_hour = 0;
  66
  67         if (curr->tm_mday < month_start_date) {
  68                 curr->tm_mon--;
  69                 if (curr->tm_mon < 0) {
  70                         curr->tm_mon = 11;
  71                         curr->tm_year--;
  72                 }
  73         }
  74
  75         is_leap_year = ((curr->tm_year + 1900) % 4 ? 0 : 1);
  76         curr->tm_mday = month_start_date;
  77
  78         switch (month_start_date) {
  79         case 29:
  80         case 30:
  81                 if (curr->tm_mon == 1 && !is_leap_year)
  82                         curr->tm_mday = 28;
  83
  84                 else if (curr->tm_mon == 1 && is_leap_year)
  85                         curr->tm_mday = 29;
  86
  87                 break;
  88         case 31:
  89                 if (curr->tm_mon == 1 && !is_leap_year)
  90                         curr->tm_mday = 28;
  91
  92                 else if (curr->tm_mon == 1 && is_leap_year)
  93                         curr->tm_mday = 29;
  94
  95                 else if (curr->tm_mon == 3 || curr->tm_mon == 5 ||
  96                          curr->tm_mon == 8 || curr->tm_mon == 10)
  97                         curr->tm_mday = 30;
  98
  99                 break;
 100         default:
 101                 ;//Do Nothing
 102         };
 103
 104         return mktime(curr);
 105 }